Window Cyll by Vincent Mejia

You take out a deck of cards, which can be examined and shuffled to your hearts content. The box is shown, and there appears to be a hole cut directly in the middle on the back. The box is examined and the spectator picks a card, signs it, and returns it to the deck.

The deck is then placed into the card case, and the cards can be seen through the hole. You ask the spectator to pull out their phone and begin recording through their phones digital window, so this can act as a souvenir of sorts. You say your going to show them a "camera trick". As they record, they see the random card through the hole in the box, change into their signed card!

Everything can be examined, and the spectator goes home with what everyone else will think is a camera trick. Yes, it looks that good.

Taught in over 8 minutes of detail, and of course, shot in glorious 720p HD.